美国学费比较便宜的高中包括：

1. Lustre Christian High School - $5,800

2. Advanced Academy of Georgia - $10,050

3. Bronte College of Canada - $11,200

4. Wolfeboro: The Summer Boarding School - $11,300

5. New Mexico Military Institute - $11,732

6. Oakdale Christian Academy - $14,900

请注意，这些信息可能会随时间变化，建议在申请前核实最新数据